.post-list-container {
    .my-masonry-grid {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        margin-left: -30px;
        width: auto;
    }

    .my-masonry-grid_column {
        padding-left: 30px;
        background-clip: padding-box;

        >section {
            margin-bottom: 15px;
        }
    }
}